6533b7d7fe1ef96bd126795e

RESEARCH PRODUCT

Modeling the nonlinear deformation of flax-fiber-reinforced polymer matrix laminates in active loading

J ModniksJanis AndersonsE. Spārniņš

subject

chemistry.chemical_classificationMaterials sciencePolymers and PlasticsTension (physics)Mechanical EngineeringPolymerDeformation (meteorology)Flax fiberNonlinear systemMatrix (mathematics)chemistryMechanics of MaterialsMaterials ChemistryCeramics and CompositesBast fibreComposite materialTensile testing

description

In an attempt to fully utilize the mechanical properties of bast fibers in polymer-matrix composites, unidirectional (UD) or quasi-UD flax-fiber-reinforced composites are being developed and characterized. Their response in tension is markedly nonlinear both in on- and off-axis loading. A semiempirical tensor-linear model is applied to describe such deformation nonlinearity in active combined loading. The deformation model of UD ply, combined with an elementary laminate theory, is used to predict the stress–strain curves of laminated composites in tension. Reasonable accuracy of prediction is demonstrated for fiber-dominated layups.

https://doi.org/10.1177/0731684414568043